387889900 has 18 divisors (see below), whose sum is σ = 841721300. Its totient is φ = 155155920.

The previous prime is 387889891. The next prime is 387889903. The reversal of 387889900 is 9988783.

It is not an unprimeable number, because it can be changed into a prime (387889903) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1939350 + ... + 1939549.

Almost surely, 2^387889900 is an apocalyptic number.

It is an amenable number.

387889900 is an abundant number, since it is smaller than the sum of its proper divisors (453831400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

387889900 is a wasteful number, since it uses less digits than its factorization.

387889900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3878913 (or 3878906 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 52.

The square root of 387889900 is about 19694.9206649836. The cubic root of 387889900 is about 729.2943077049.

The spelling of 387889900 in words is "three hundred eighty-seven million, eight hundred eighty-nine thousand, nine hundred".